Gson is a library for Java that can be used to generate JSON. We can use Gson's fromJson() method to parse a JSON string into a Java object and use Gson's toJson() method to convert a Java object into a JSON string. The fromJson() method has two parameters. The first parameter is the JSON string to be parsed, and the second parameter is the Java class to be parsed. We can pass one argument to the toJson() method, which is the Java object we want to convert to a JSON string.
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